India Post — Speed Post undelivered

Address: Kolkata, West Bengal, 700107

My speed Post no. EE[protected]IN dated 16.12.2016 from chumukedima Dimapur to Kolkata 700107 West Bengal is not delivered till date. So today I went to Haltu post office Kolkata which is my jurisdiction post office but I was informed by my post man that my speed Post is still lying in Dimapur Nagaland he confirmed after looking in internet in office computer. My speed Post consignment is eatible food stuff for my mother. Therefore I am very worried because it is a perishable food stuff. Please look into the matter urgently. Thanks